For something we use so often, the light bulb hasn't changed much over the years. The LIFX ($70) is out to change all that. By packing Wi-Fi into a standard-sized bulb, it lets you control your lights using nothing but your phone. It's also based on LED technology, which allows you to change the color of the light on a whim, and ensures a lifespan of up to 25 years — all you need to do is replace your existing bulbs and enjoy. [Scouted by Perrin]